By the looks of it, you always sleep on your back, so that is why it nested back there without separating, so you will need to pay attention to that area more once you do get them separated. I know it's hard once asleep, but try to sleep on your side sometimes. Maybe a pillow tucked behind your back would help keep you that way?
updated by @the-barrellady: 07/18/15 06:22:19PM